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用 Python 手写 Lisp 解释器

#ARTICLE HackerNews 2026.06.22
推荐指数 41.0 NO. 014 · 2026.06.22
发布2026/06/21Score96Comments35

Peter Norvig 的经典教程,仅用 90 行 Python 代码实现一个完整的 Lisp 解释器。对想深入理解语言设计、编译原理底层逻辑的工程师,这是最高性价比的入门路径。

这篇 2010 年的文章至今仍在 HN 首页出现,说明 AI 时代工程师对底层原理的渴求在回升。Norvig 的实现刻意保持极简,没有依赖任何外部库,这种"从零开始"的写法恰恰是理解现代 LLM 工具链黑盒的最佳反衬。

如果你日常用 Python 调 OpenAI API 但说不清 exec() 和 eval() 的区别,或者想读 PyTorch 源码却被 C++ 劝退,这 90 行代码是完美的垫脚石。花两小时跟着敲一遍,比读十篇"LLM 原理科普"都管用。

正面 28 条评论

核心争论:Lisp 括号是设计优势还是可读性障碍,实现解释器仍是最佳入门路径

tosh

I can't recommend highly enough to implement a simple lisp (or a forth). Illuminating experience and it will also help you see (among many other things) the parentheses in a different light.

stdatomic

First day of paradigms course in the 2000s and prof says "if your opinion of Scheme is too many parentheses, then you're an idiot." Needless to say that was my opinion and every day I think, more and more, how right he was. (later I did make some gui apps that included scripting and chose s-expr syn

NooneAtAll3

main problem isn't brackets themselves - it's that they're too on the right had brackets been displayed as curly braces in C - everything would look much more manageable

替代方案: MAL (Make-A-Lisp)Crafting InterpretersRaku
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